I have one mini-ATX server with four drives in RAID 10. I find it easier to manage everything in one device. It runs Proxmox, with Almalinux in a VM that runs my Docker containers. Yes, it’s a layer of inefficiency, but I keep it that way partially because I migrated the VM to Proxmox from ESXi, and partially because I’m not confident in LXC being able to do everything Docker can.
I also run it that way because I have a handful of other VMs.